Gobies, blennies, and small marine fish
Blue Assessor
Assessor macneilli
Photo: Rick Stuart-Smith / Reef Life Survey · CC BY 3.0 · Wikimedia Commons
Key facts
- Temperature24–27 °C
- pH8.1–8.4
- Minimum tank100 l
- Adult size6 cm
- Difficulty★★☆☆☆
- TemperamentPeaceful
- WaterMarine
- Reef safeYes
Full profile
- Family
- Plesiopidae
- Origin
- Great Barrier Reef and New Caledonia
- Size
- 6 cm
- Temperature
- 24 – 27°C
- pH
- 8.1 – 8.4
- Salinity
- 1.023 – 1.025
- Difficulty
- ★★☆☆☆
- Water type
- marine
- Swimming level
- medium
- Behavior
- Pacific
- Minimum number of individuals
- 1 or a group
- Minimum aquarium size
- 100 L
- Diet
- carnivore
- Reproduction
- oviparous; paternal mouthbrooding
- Reef Safe
- ✅ Yes
Notes: Uniform dark blue. Swims on its back beneath rock ledges. Very calm.
